What is the XPath to select a range of nodes?

Isn't fn:subsequence the best way?

subsequence( /foo/bar, 100, 101 )

returns all items from position 100 through 200, that is 101 items (or less if the source sequence is shorter).

//foo/bar[100 <= position() and position() < 200]

Use:

/*/bar[position() >= 100 and not(position() > 200)]

Do note:

1. Exactly the bar elements at position 100 to 200 (inclusive) are selected.

2. The evaluation of this XPath expressions can be many times faster than an expression using the // abbreviation, because the latter causes a complete scan of the tree whose root is the context node. Always try to avoid using the // abbreviation in cases when this is possible.